Characterization of Zn doped MgTiO3 ceramics: an approach for RF capacitor applications

Gogoi, Prerana; Singh, L. Robindro; Pamu, D.

doi:10.1007/s10854-017-6975-6

Cited by 31 publications

(11 citation statements)

References 27 publications

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“…x Zn x )TiO 3 , x = 0.01-0.07] had been reported earlier [8]. The best broadband and microwave dielectric properties were obtained for the sample x = 0.05 sample, which was sintered at 1275 o C for 3 h. Therefore, the ceramic with the formula MZT is chosen for the thin lms used for this study.…”

Section: Crystal Structure Of the Thin Lmsmentioning

confidence: 86%

“…Various research groups have elaborated their efforts to improve the quality factor of MgTiO 3 based ceramics, but reports involving the thin lm form of this composition are scarce [4,7]. In our previous investigation, we have studied the role of Zn on the dielectric properties of MgTiO 3 ceramics and optimized the best composition as MZT in the bulk form [8]. In the current study, an attempt has been made to prepare MZT thin lms using radio frequency (RF) magnetron sputtering.…”

Section: Introductionmentioning

confidence: 99%

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Dielectric Properties and Impedance Spectroscopy of RF Sputtered Nanocrystalline (Mg0.95Zn0.05)TiO3 Films for Electronic Applications

Gogoi¹,

Pr²,

Ka³

et al. 2021

Preprint

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Oxide thin films attracted significant attention because of their favorable responses, especially dielectric and stable electrical properties. In this study, nanocrystalline (Mg0.95Zn0.05)TiO3 (MZT) films are deposited on Pt/TiO2/SiO2/Si and quartz substrates by radio-frequency (RF) reactive magnetron sputtering. The effect of deposition gas ratio, i.e., the proportion of oxygen and argon (O2/Ar) on broad band and microwave dielectric properties and impedance spectroscopy of MZT films are investigated. The dielectric properties showed a wide range of variation with the different O2/Ar ratios. The MZT film deposited in a pure oxygen environment showed the best dielectric properties, and the plasma survived which shows that the target is not fully oxidized. The impedance spectroscopy of the film deposited under a pure oxygen environment exhibited the single semi-circular arc. The Ag/ MZT/Pt thin films capacitors exhibited the best dielectric constant with low loss tangent. The microwave dielectric constant measured at different spot frequencies in the GHz range displayed inferior dielectric response as compared to their bulk counterparts. An equivalent circuit model to explain the Nyquist plots of MZT films are worked out. The observed electrical and dielectric characteristics of the thin films suggest interesting applications in dielectric mirror and integrated circuits.

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Section: Crystal Structure Of the Thin Lmsmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Dielectric Properties and Impedance Spectroscopy of RF Sputtered Nanocrystalline (Mg0.95Zn0.05)TiO3 Films for Electronic Applications

Gogoi¹,

Pr²,

Ka³

et al. 2021

Preprint

Self Cite

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“…The excess addition of B 2 O 3 (3 wt%) resulted in the generation of considerable amount of liquid phases resulting in a reduction in density, a decrease in dielectric constant and a slow increase in dielectric loss for the samples. In general, the dielectric constant of MgTiO 3 ceramics is ∼17 [26,27], and thus, the samples considered in this study met the requirements. To reduce heat loss and energy consumption, the dielectric loss of the dielectric ceramic material should be reduced [25].…”

Section: Dielectric Propertiesmentioning

confidence: 94%

Influence of B₂O₃ doping on synthesis of MgTiO₃ ceramics from recycled magnesia-hercynite materials

Jia

Mao

Lin

et al. 2021

Mater. Res. Express

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Herein, magnesium metatitanate (MgTiO3) ceramics were synthesised using recycled magnesia-hercynite (MH) bricks as the raw materials to achieve solid waste reusing of cement kiln refractories. The recycled MH materials were mixed with anatase TiO2 to investigate the effect of addition of doped B2O3 during the synthesis of MgTiO3 ceramics at 1400 °C. Phase compositions and microstructural studies were performed using x-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. In addition, energy-dispersive spectroscopy (EDS) was conducted and the dielectric properties of the samples were studied. Results show that the addition of B2O3 can promote sintering, improve shrinkage, promote densification, stabilise MgTiO3 lattice, and inhibit the formation of MgTiO3. In addition, the presence of appropriate amount of B2O3 can accelerate the material diffusion and result in grain growth through the formation of intercrystalline liquid phase. Results also suggest that an increase in dielectric constant results in a decrease in dielectric loss. It was concluded that 2 wt% was the optimum amount of B2O3 required to obtain the most favourable synthesis rate of MgTiO3 (98.2%). The samples exhibited a maximum density of 3.69 g·cm−3 and excellent microwave dielectric properties at ε r = 18.28 and tanδ = 0.086.

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“…MgTiO 3 also belongs to the general formula of ABO 3 . The substitution for MgTiO 3 such as Ni, Zn, Co, and Mn for Mg has been investigated systematically [433][434][435][436], where (Mg 1-x Co x )TiO 3 ceramics were crystalized as ilmenite structure when x ≤ 0.5, and the www.springer.com/journal/40145 secondary phase was detected with more doping cations [437]. (Zn 1-x Mg x )TiO 3 was prepared and demonstrated that the dielectric constant and loss decreased with Mg increase [438].…”

Section: Abo 3 Formulamentioning

confidence: 99%

The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

et al. 2021

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The explosive process of 5G communication evokes the urgent demand of miniaturized and integrated dielectric ceramics filter. It is a pressing need to advance the development of dielectric ceramics utilization of emerging technology to design new materials and understand the polarization mechanism. This review provides the summary of the study of microwave dielectric ceramics (MWDCs) sintered higher than 1000 from 2010 up to now, °C with the purpose of taking a broad and historical view of these ceramics and illustrating research directions. To date, researchers endeavor to explain the structure-property relationship of ceramics with multitude of approaches and design a new formula or strategy to obtain excellent microwave dielectric properties. There are variety of factors that impact the permittivity, dielectric loss, and temperature stability of dielectric materials, covering intrinsic and extrinsic factors. Many of these factors are often intertwined, which can complicate new dielectric material discovery and the mechanism investigation. Because of the various ceramics systems, pseudo phase diagram was used to classify the dielectric materials based on the composition. In this review, the ceramics were firstly divided into ternary systems, and then brief description of the experimental probes and complementary theoretical methods that have been used to discern the intrinsic polarization mechanisms and the origin of intrinsic loss was mentioned. Finally, some perspectives on the future outlook for high-temperature MWDCs were offered based on the synthesis method, characterization techniques, and significant theory developments.

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Characterization of Zn doped MgTiO3 ceramics: an approach for RF capacitor applications

Cited by 31 publications

References 27 publications

Dielectric Properties and Impedance Spectroscopy of RF Sputtered Nanocrystalline (Mg0.95Zn0.05)TiO3 Films for Electronic Applications

Dielectric Properties and Impedance Spectroscopy of RF Sputtered Nanocrystalline (Mg0.95Zn0.05)TiO3 Films for Electronic Applications

Influence of B₂O₃ doping on synthesis of MgTiO₃ ceramics from recycled magnesia-hercynite materials

The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

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Characterization of Zn doped MgTiO3 ceramics: an approach for RF capacitor applications

Cited by 31 publications

References 27 publications

Dielectric Properties and Impedance Spectroscopy of RF Sputtered Nanocrystalline (Mg0.95Zn0.05)TiO3 Films for Electronic Applications

Dielectric Properties and Impedance Spectroscopy of RF Sputtered Nanocrystalline (Mg0.95Zn0.05)TiO3 Films for Electronic Applications

Influence of B2O3 doping on synthesis of MgTiO3 ceramics from recycled magnesia-hercynite materials

The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

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Product

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Influence of B₂O₃ doping on synthesis of MgTiO₃ ceramics from recycled magnesia-hercynite materials